0.10x(x+3000)=5200

Solution for 0.10x(x+3000)=5200 equation:

0.10x(x+3000)=5200

We move all terms to the left:

0.10x(x+3000)-(5200)=0

We multiply parentheses

0x^2+0x-5200=0

We add all the numbers together, and all the variables

x^2+x-5200=0

a = 1; b = 1; c = -5200;
Δ = b2-4ac
Δ = 12-4·1·(-5200)
Δ = 20801
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-\sqrt{20801}}{2*1}=\frac{-1-\sqrt{20801}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+\sqrt{20801}}{2*1}=\frac{-1+\sqrt{20801}}{2}
$